Integration part 2

is the communication between a set of heterogeneous systems that are integrated together.

• Inter-system Communication

• File transfer

• Remote Procedure Invocation

• Functional Integration Model

-One application writes a file that another later reads.

- The applications need to agree on the filename and location, the format of the file, the timing of when it will be written and read, and who will delete the file.

• File transfer

• Remote Procedure Invocation

• Message-oriented Middleware

• Functional Integration Model

-One application exposes some of its functionality so that it can be accessed remotely by other applications as a remote procedure.

- The communication occurs real-time and synchronously

• Remote Procedure Invocation

• File transfer

• Functional Integration Model

• Data Integration Model

allows the integration of software for the purpose of invoking existing functionality from other new or existing applications. The integration is done through interfaces to the software.

• Functional Integration Model

• Data Integration Model

• Incremental Engineering

• Modification

allows the integration of software through access to the data that is created, managed, and stored by the software typically for the purposes of reusing synchronizing data across applications.

• Data Integration Model

• Incremental Engineering

• Modification

• Functional Integration Model

A software system can be developed and delivered using available technologies and with less functionality than it is intended to finally provide. New technologies can be integrated in the system.

• Incremental Engineering

• Modification

• Data Integration Model

• Remote Procedure Invocation

Sometimes an existing and properly functioning software system must be decomposed and integrated to carry out modification.

• Modification

• Incremental Engineering

• Data Integration Model

• Functional Integration Model

Fundamentals challenges of integration

• Unreliable Network

• Distributed

• Network are slow

• Heterogenous

• Applications change over time